Renormalization Group Summation and the Free Energy of Hot QCD

Details Renormalization Group Summation and the Free Energy of Hot QCD Renormalization Group Summation and the Free Energy of Hot QCD

2002-10-10

arxiv.org/abs/hep-ph/0210163v2

Phys.Rev. D67 (2003) 027701

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages REVTEX4, 2 figures; v2: typos corrected

Scientific paper

10.1103/PhysRevD.67.027701

Using an approach developed in the context of zero-temperature QCD to systematically sum higher order effects whose form is fixed by the renormalization group equation, we sum to all orders the leading log (LL) and next-to-leading log (NLL) contributions to the thermodynamic free energy in hot QCD. While the result varies considerably less with changes in the renormalization scale than does the purely perturbative result, a novel ambiguity arises which reflects the strong scheme dependence of thermal perturbation theory.

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